H2O2 Generated by Natural Biofilms Under Light Irradiation and Its Effects on Degradation of Sodium Dodecyl Benzene Sulfonate

作者：Dong Deming; Li Ming; Sun Jiaqian; Zhao Tianyu; Hua Xiuyi^*; Guo Aitong; Liang Dapeng

来源：Chemical Journal of Chinese Universities, 2014, 35(6): 1247-1251.

DOI：10.7503/cjcu20140194

• Light
• Natural biofilm
• Hydrogen peroxide
• Sodium dodecyl benzene sulfonate (SDBS)
• Degradation

In this study, generation of H2O2(hydrogen peroxide) by natural biofilms of different bioactivities under light irradiation was investigated, and effect of light on sodium dodecyl benzene sulfonate (SDBS) degradation in such natural biofilm-water systems was evaluated. The role of H2O2 in the degradation of SDBS was also verified by SDBS degradation experiments in H2O2 solution without biofilms. The results indicated that: (1) biofilms with full bio-activity can generate H2O2 while biofilms without any bio-activity or bio-activity of photosynthesis can not generate H2O2; (2) much more SDBS can be degraded under visible light than in darkness; (3) light and Fe2+ can promote the degradation of SDBS in the presence of H2O2. H2O2 produced by natural biofilms should be one of the most important causes of the degradation of SDBS, and the roles of H2O2 in the degradation should include both direct oxidation of SDBS by H2O2 and the indirect role in generating active oxygen species.

• 出版日期2014-6-10
• 单位吉林大学